JPH0719473U - Floorboard for laying - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability of floorboards. [Structure] On the lower surface of a wooden substrate (2) having a decorative layer (1) formed on the front surface and a plurality of grooves (3) formed from the rear surface,
Laminating and sticking the high specific gravity restraint material (4).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a construction of a floorboard that can be installed by placing it directly on a floor base without applying an adhesive.

[0002]

[Prior art]

 In the conventional floorboard for direct attachment, plywood or the like is used as a substrate, a decorative veneer or the like is appropriately attached to the surface of the floorboard to form a decorative layer, and a foamed plastic is formed on the back surface to enhance adhesion with the floor substrate. A cushioning material such as a sheet is attached. Further, the floorboard for direct attachment having the above-mentioned structure was constructed by directly applying an adhesive onto a concrete floor slab or the like of an apartment house.

[0003]

[Issues to be solved by the device]

 However, the direct-adhesion floorboard having the above structure has the following problems. In other words, since the adhesive is applied to the floor base before the installation, it takes time and effort to adjust the adhesive and apply it to the floor base. It was necessary to cure the floorboard. Furthermore, when remodeling, the floorboard is firmly attached to the floor base with an adhesive, so it is difficult to peel it off, and re-working of the floorboard requires a lot of time and effort.

[0004]

[Means for Solving the Problems]

 This invention was devised to solve the above-mentioned problems, and the floorboard for laying down according to claim 1 is a wooden substrate having a decorative layer formed on the front surface and a plurality of grooves formed on the back surface. A binding material having a high specific gravity is laminated and attached to the lower surface of the.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a floorboard for laying floor of the present invention, in which 1 is a decorative layer, 2 is a wood substrate, 3 is a groove, and 4 is a restraint.

The wood substrate 2 is made of plywood, laminated veneer lumber (LVL, LVB), particle board, medium density fiberboard (MDF), etc., individually or in combination, and has a thickness of about 5 to 12 mm. The decorative layer 1 is formed by sticking a natural wood decorative veneer, a decorative paper, a vinyl chloride resin sheet or the like on the surface with an adhesive, or by applying a direct coating. In addition, when a natural wood decorative veneer is attached, it is preferable to place Japanese paper or the like between the veneer and the wood substrate 2 because cracking of the veneer due to absorption and release of water can be prevented.

A plurality of grooves 3 are formed on the back surface of the wooden substrate 2. The width is 1.0 to 1.5 mm and the pitch is 40 to 60 mm. The depth of the groove 3 depends on the thickness of the wooden substrate 2, and in any case, it is formed up to the substantially central portion. For example, a 5-ply plywood having a thickness of 9 mm is cut to a depth of 2.5 mm.

On the lower surface of the wooden substrate 2, a binding material 4 made of a rubber material having a thickness of about 2 to 5 mm, such as natural rubber, styrene-butadiene rubber, urethane rubber, or a synthetic resin such as soft vinyl chloride resin is used as an adhesive. Pasted through. The binding material 4 is mixed with a filler such as asphalt or calcium carbonate to adjust the specific gravity to about 1.0 to 1.6. As the adhesive, water-based vinyl urethane or latex modified urea resin is used.

[0010]

[Action]

 The high-specific-gravity restraint material according to the present invention suppresses warpage and flaking that occur when a decorative layer such as a decorative veneer is formed on the surface of a wooden substrate. In addition, by forming a groove on the back surface of the wooden board, appropriate flexibility is given to the floor board itself, which promotes the return of warpage and roughening, and effectively suppresses the above-mentioned warping and roughening together with a restraint material with high specific gravity. .

An embodiment of the present invention will be shown below.

[0012]

Example: A veneer veneer of oak having a thickness of 0.3 mm is attached to the surface of a 5-ply plywood sheet having a thickness of 9 mm, and a groove having a width of 1.5 mm, a depth of 4.5 mm and a pitch of 50 mm is formed from the back surface. A backing material with a thickness of 3 mm adjusted to have a specific gravity of 1.55 by mixing asphalt with SBR was adhered to the lower surface of a plurality of wooden boards to obtain a floorboard for a desired floor. Then, the floorboard for laying was directly placed on the concrete floor slab of the housing complex without applying an adhesive, and construction was performed. After construction, the floorboard was good with no floating or displacement.

[0013]

[Effect of device]

 According to this invention, the construction can be performed simply by placing it on the floor base without applying the adhesive at the time of construction. Therefore, it is possible to omit the preparation and application of the adhesive, which can significantly reduce the construction time. Also, when remodeling, the floorboards are simply placed on the floorboard, so they can be easily removed and the floorboards can be refilled smoothly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a floorboard for an inlay according to the present invention.

[Explanation of symbols]

 1 Decorative layer 2 Wooden substrate 3 Groove 4 Restraint material

Claims (1)

[Scope of utility model registration request] 1. A binding material (4) having a high specific gravity is laminated and adhered to a lower surface of a wooden substrate (2) having a decorative layer (1) formed on the front surface and a plurality of grooves (3) formed from the rear surface. A floorboard for laying down that has been characterized.